#include<stdio.h>
int main()
{
   int a,b;
    scanf("%d%d",&a,&b);
    /*a=a+b;
    b=a-b;
    a=a-b;
    */
    a=a^b;
    b=a^b;
    a=b^a;
    printf("%d %d",a,b);
    return 0;
}